So far the book or authors don't seem original since they are using terminology that is Eastern European and Romanian, Greek, Latin in origin.
The terms Strigoii Vii (a “living vampire”) & Strigoii Mort (a “undead vampire”) are not new to me since I already know about Eastern European beliefs of vampires, werewolves and witches.
I know about Eastern European beliefs of vampires due to reading a lot of books about vampire mythology from the ancient to modern civilization of humanity.
I understand why they use ther term “Strigoii Vii” in the book to describe a living vampire but that doesn't apply to all vampires because not all vampires/vampyres (which ever spelling you use) in the VC (Vampire Community) are the same. Not all types of vampyres are mentioned such as Psychic Vampyres, Tantric Vampyres or emotional Vampyres.
In case anyone doesn't know Father Sebastiaan is a vampire, occultist, author and a “fangsmith” (he professionally gives people real fangs) However I have learned of some controversial things about Father Sebastiaan (due to talking to a Elder vampire in a vampirism group on kik) J don't want to judge the character of the author so I will remain objective and give my honest opinion and review of his books.